Return dedicated error when skippng chart update
Return dedicated error when skippng chart update

If applyChart skipped any actions, return a dedicated error so we know
whether the most recent update condition message should be overwritten.

Signed-off-by: Fabian Reinartz <bb86cc68560718128c801bf7438361ace07bbc0d@google.com>
Change-Id: If5bbf2a4f21dca6f3534e01a3540e4daeca32199
GitOrigin-RevId: d18164e7f065b2bbae883e1e4f2fa22ccadad584

googlecloudrobotics/core,googlecloudrobotics/core,googlecloudrobotics/core